Wrench.



C, MANN.

WRENCH.

APPLICATION FILED MAR. 30, me.

Patented Oct. 31, 1916.

' ornrcn.

CHARLES IIIANN, 0F TAR RIVER, OKLAHOMA.

WRENCH.

neoaoee.

Specification of Letters Patent.

Patented Oct. 31, 1916.

Application filed. March 30, 1916. Serial No. 87,800.

To all whom it may concern Be it known that I, CHARLES MANN, a citizen of the United States, residing at Tar River, in the county of Ottawa, State of Oklahoma, have invented certain new and useful Improvements in Wrenches, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a wrench.

An object of the invention resides in the provision of a wrench which may be readily and quickly adjusted.

A further object of the invention resides in. so constructing the wrench that the greater the force applied to the nut or other article on which it is operating, the greater will be the binding action of the pawl which secures the adjustable jaw in position.

With these and other objects in view, such as will appear as my description progresses, my invention comprises the combination and arrangement of parts as set forth in and falling within the scope of the appended claim.

In the drawing: Figure 1 is an elevational view of a wrench constructed in accordance with my invention; Fig. 2 is a longitudinal sectional view thereof; Fig. 3 is a sectional view on l ne 33 of Fig. 2, and Fig. 1 is a detail showing the manner in which the pawl is mounted.

Referring to the drawing by reference characters wherein like parts are indicated by like characters throughout the several views: I have illustrated a stationary jaw 1 from which an integral handle 2 extends. This jaw 1 is mounted within a casing 3, which casing is open at both ends and is substantially rectangular in cross section. A movable jaw is provided which includes a jaw portion l and a shank 5, the latter being slidably mounted within the casing 3 and having an'upturned end 6 for preventing its entire displacement from the casing. The jaws 1 and 4 are provided with the usual serrations and the shank 5 of the movable jaw is provided with rack teeth 7 on its inner edge. It will be obvious that in using the device the jaws may be separated or moved together as desired and in order that they may be maintained in their ad justed positions, I have provided a pawl 8 which is pivotally mounted on a pin 9, which pin extends transversely of and is mounted in the casing 3 between the handle 2 and the shank 5. The bill 10 of this pawl is adapted to engage the rack teeth 7 on the shank 5. In order that this pawl may normally be actuated so that the bill 10 will engage the said rack teeth, I have provided what I will term an actuating member which includes a shank 11 and diverging arms 1:2, at the junction of which shank and arms a shoulder 13 is formed. These arms are pivotally mounted upon the pin 9, the latter passing through the arms and the pawl 8 is located between the arms so that it will contact with the shoulder 13. A coil spring 1% is mounted in a bore in the handle '2 and bears against the shank 11 and normally presses it away from the handle, and the shoulder 13 into contact with the pawl 8 so that the bill 10 of the pawl will engage the rack teeth 7. This pawl is provided with a thumb piece 15 which extends through an elongated slot 16 in one side of the casing, which thumb piece may be engaged by the operator to disengage the pawl from the rack teeth.

It will be obvious from this construction that the pawl will normally be maintained in contact with the rack teeth and furthermore that when the device is being used the pressure which tends to force the jaws apart will also act upon the bill of the pawl and tend to bind the same more firmly on the teeth 7. I

While I have illustrated and described a particular embodiment of my invention, it has merely been for the sake of convenience and I do not wish to be limited to that particular embodiment as it is obvious that numerous changes may be made in the details of construction without departing from the spirit of the invention or exceeding the scope of the appended claim.

What I claim is:

In a wrench, the combination with a stationary jaw having a handle extending therefrom, of a casing mounted thereon, a movable jaw including a jaw member and a shank, which shank extends through and is slidable in the casing, a pawl pivotally mounted within the casing, the shank have gagement with the teeth on the shank of the ing rack teeth thereon with which said pawl movable aW; V I3 engages, a pawl actuating member including In testimony whereof, I aflix my signaa pair of diverging arms and a shank, there ture, in the presence of two witnesses.

being a shoulder between the arms and CHARLIE MANN. shank which bears against the pawl and. a lVitnesses:

spring for urging the shoulder into engage- E. DAUGI-IERTY,

ment with the pawl and the pawl into en-v F. M. DOBBS.

Copies of this patent may lac-obtained for five cents each, by afldl'cssing the ,Commissioner of ratents,

. Washington, D. C. 

